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From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>,
	kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
	seabios@seabios.org, Isaku Yamahata <yamahata@valinux.co.jp>,
	Kevin O'Connor <kevin@koconnor.net>, Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH RFC] seabios: add OSHP method stub
Date: Tue, 14 Feb 2012 12:49:08 +0000	[thread overview]
Message-ID: <201202141249.09301.paul@codesourcery.com> (raw)
In-Reply-To: <20120214010913.GA5192@redhat.com>

> > In a nutshell, I don't know what a SHPC is (nor OSHP), so I'm looking
> > for an additional Ack.
> 
> No problem, I'll get an Ack :)
> Meanwhile - here's a summary, as far as I understand it.
> 
> Originally PCI SIG only defined the electrical
> and mechanical requirements from hotplug, no standard
> software interface. So it needed ACPI to drive device-specific registers
> to actually do hotplug.
> At some point PCISIG defined standard interfaces
> for PCI hotplug. There are two of them: standard
> hot plug controller (SHPC) for PCI and PCIE hotplug
> for Express.
> 
> Now an OS can have a standard driver and use it
> to activate hotplug functionality. This is OS hotplug (OSHP).

So presumably this will work on targets that don't have ACPI?
Assuming a competent guest OS of course.  Have you tested this?

Paul

WARNING: multiple messages have this Message-ID (diff)
From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>,
	kvm@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>,
	seabios@seabios.org, Isaku Yamahata <yamahata@valinux.co.jp>,
	Kevin O'Connor <kevin@koconnor.net>, Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] [PATCH RFC] seabios: add OSHP method stub
Date: Tue, 14 Feb 2012 12:49:08 +0000	[thread overview]
Message-ID: <201202141249.09301.paul@codesourcery.com> (raw)
In-Reply-To: <20120214010913.GA5192@redhat.com>

> > In a nutshell, I don't know what a SHPC is (nor OSHP), so I'm looking
> > for an additional Ack.
> 
> No problem, I'll get an Ack :)
> Meanwhile - here's a summary, as far as I understand it.
> 
> Originally PCI SIG only defined the electrical
> and mechanical requirements from hotplug, no standard
> software interface. So it needed ACPI to drive device-specific registers
> to actually do hotplug.
> At some point PCISIG defined standard interfaces
> for PCI hotplug. There are two of them: standard
> hot plug controller (SHPC) for PCI and PCIE hotplug
> for Express.
> 
> Now an OS can have a standard driver and use it
> to activate hotplug functionality. This is OS hotplug (OSHP).

So presumably this will work on targets that don't have ACPI?
Assuming a competent guest OS of course.  Have you tested this?

Paul

  reply	other threads:[~2012-02-14 12:49 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-13  9:15 [PATCHv2-RFC 0/2] RFC: standard pci bridge device Michael S. Tsirkin
2012-02-13  9:15 ` [Qemu-devel] " Michael S. Tsirkin
2012-02-13  9:15 ` [PATCHv2-RFC 1/2] shpc: standard hot plug controller Michael S. Tsirkin
2012-02-13  9:15   ` [Qemu-devel] " Michael S. Tsirkin
2012-02-13 10:03   ` Isaku Yamahata
2012-02-13 10:03     ` [Qemu-devel] " Isaku Yamahata
2012-02-13 11:49     ` Michael S. Tsirkin
2012-02-13 11:49       ` [Qemu-devel] " Michael S. Tsirkin
2012-02-13 14:30       ` Isaku Yamahata
2012-02-13 14:30         ` [Qemu-devel] " Isaku Yamahata
2012-02-13 14:49         ` Michael S. Tsirkin
2012-02-13 14:49           ` [Qemu-devel] " Michael S. Tsirkin
2012-02-17 13:20   ` Gerd Hoffmann
2012-02-17 13:20     ` [Qemu-devel] " Gerd Hoffmann
2012-02-13  9:16 ` [PATCHv2-RFC 2/2] pci: add standard bridge device Michael S. Tsirkin
2012-02-13  9:16   ` [Qemu-devel] " Michael S. Tsirkin
2012-02-17 13:25   ` Gerd Hoffmann
2012-02-17 13:25     ` [Qemu-devel] " Gerd Hoffmann
2012-02-19 14:57     ` Michael S. Tsirkin
2012-02-19 14:57       ` [Qemu-devel] " Michael S. Tsirkin
2012-02-19 23:44       ` Michael S. Tsirkin
2012-02-19 23:44         ` Michael S. Tsirkin
2012-02-17 13:33   ` Gerd Hoffmann
2012-02-17 13:33     ` [Qemu-devel] " Gerd Hoffmann
2012-02-20 22:40     ` Michael S. Tsirkin
2012-02-20 22:40       ` Michael S. Tsirkin
2012-02-21  8:02       ` Gerd Hoffmann
2012-02-21  8:02         ` [Qemu-devel] " Gerd Hoffmann
2012-02-13  9:33 ` [PATCH RFC] seabios: add OSHP method stub Michael S. Tsirkin
2012-02-13  9:33   ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14  0:34   ` Kevin O'Connor
2012-02-14  0:34     ` [Qemu-devel] " Kevin O'Connor
2012-02-14  0:43     ` Michael S. Tsirkin
2012-02-14  0:43       ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14  0:48       ` Kevin O'Connor
2012-02-14  0:48         ` [Qemu-devel] " Kevin O'Connor
2012-02-14  1:09         ` Michael S. Tsirkin
2012-02-14  1:09           ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14 12:49           ` Paul Brook [this message]
2012-02-14 12:49             ` Paul Brook
2012-02-14 13:37             ` Michael S. Tsirkin
2012-02-14 13:37               ` [Qemu-devel] " Michael S. Tsirkin
2012-02-14 13:47               ` Paul Brook
2012-02-14 13:47                 ` Paul Brook
2012-02-14 14:11                 ` Michael S. Tsirkin
2012-02-14 14:11                   ` Michael S. Tsirkin
2012-02-29 11:25   ` [SeaBIOS] " Gerd Hoffmann
2012-02-29 11:25     ` [Qemu-devel] " Gerd Hoffmann
2012-02-13  9:38 ` [PATCHv2-RFC 0/2] RFC: standard pci bridge device Wen Congyang
2012-02-13  9:38   ` [Qemu-devel] " Wen Congyang
2012-02-13  9:56   ` Michael S. Tsirkin
2012-02-13  9:56     ` [Qemu-devel] " Michael S. Tsirkin

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